There's some interesting material on the Honeywell HX5000 process (Silicon on Insulator - usually synthetic sapphire) for radiation hardening. There's an inter

There's some interesting material on the Honeywell HX5000 process (Silicon on Insulator - usually synthetic sapphire) for radiation hardening. There's an interesting (if somewhat technical) document here: http://www51.honeywell.com/aero/common/documents/myaerospacecatalog-documents/Space-documents/HX5000_Series_0.15um_SOI.pdf http://www51.honeywell.com/aero/common/documents/myaerospace...